From 06a0cf2e31747c658fa4b27cda016621ab6d5a1f Mon Sep 17 00:00:00 2001
From: David Herges <dherges@users.noreply.github.com>
Date: Tue, 13 Jun 2017 11:51:30 +0200
Subject: [PATCH] docs(aio): http guide shows how to import toPromise operator
 from rxjs

Solves #17454
---
 aio/content/guide/http.md | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/aio/content/guide/http.md b/aio/content/guide/http.md
index c1a32e9687..55d6f25343 100644
--- a/aio/content/guide/http.md
+++ b/aio/content/guide/http.md
@@ -407,6 +407,9 @@ like the Observable-based version.
 
 </div>
 
+First, make sure to import the `toPromise` operator of the RxJS library.
+
+<code-example path="http/src/app/toh/hero.service.promise.ts" region="rxjs-imports" title="src/app/toh/hero.service.promise.ts (import rxjs)" linenums="false"></code-example>
 
 Here is a comparison of the `HeroService` using Promises versus Observables,
 highlighting just the parts that are different.